Tire-removing tool



0. A. NORLUND.

TIRE REMOVING TOOL.

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1,385,948. Patented July 26,1921.

OAJZorlund INVENTOR UNITED STATES PATENT OFFICE.

TIRE-REMOVING TOOL.

Specification of Letters Patent.

Patented July 2c, 1 21.

Application filed March 24, 1920. Serial No. 368,257.

T 0 aZZ whom it may concern:

Be it known that I, OLQF A. NORLUND, a citizen of the United States, residing at l/Villiamsport, in the county of Lycoming and State of Pennsylvania, have invented a new and useful Tire-Removing Tool, of which the following is a specification.

This invention relates to tools designed especially for removing tires from the rims of automobile wheels.

The object of the invention is to provide a tool of general utility: for example, one which is not merely useful in removing or mounting tire casings but is capable of cutting loose casings rusted fast to rims and which will also serve as a pry bar for releas ing the lock rings from the rim and casing, besides being usable as a lever for spreading the springs of the car working around the motor, brakes, etc. I

The special object of the invention is to provide a tool which will cut a rusted tire loose from the rim without injury to the casing, the flap or the inner tube, and which does it easily and quickly.

Any tire that has been on a car for a long time where demountable rims are used is liable to become rusted so fast to the rim, in both the casing and the protecting flap, that ordinary tools are altogether inadequate. Frequently a sledge hammer is powerless to remove a tire in such a condltion. 011 some occasions it is necessary to saw the the through with a hack saw to get the tire off. In most instances, when using such tools as sledge hammers, the rim as well :as the tire is injured to a point where it becomes worthless. If one attempts to pry off these rusted casings the inner tube is usually torn to pieces.

With the present tool, it is easy to remove the lock ring and then to drive one end of the tool underneath the casing and flap, whereupon a certain portion of the tool is hammered to drive the tool around the rim underneath the casing and flap. This result is reached by reason of the hollow ground cutting edge provided in the present instrument, which cutting edge cuts loose the casing and flap without any possible injury to either or without endangering the inner tube. Once loosened, the tire is readily removed in the usual manner. One end of the tool is so shaped as to enter the slots of the lock ring so that the same may be pried loose. Thus it is seen that this tool will perform all the usual operations of a tire removing tool and will do what other tools will not, namely, remove tires rusted fast to rims gvlthout injury to any of the parts of the ire.

The invention will" be best understood from a consideration of the following cleta-iled description taken in connection with the accompanying drawing forming part of thls specification, with the understanding, however, that theinvention is not confined to any strict conformity with the showing 111 the drawing, but may be changed and mod fied so long as such changes and modificatlons mark no material departure from the salient features of the'invention asexpressed in the appended claims.

In the drawing Flgure l is a perspective view of the preferred embodiment of the invention looking from the side which is to be hammered.

Fig. 2 is a cross'section on the line.2 2 f of Fig. 1.

Fig. 3 is a cross section on the. line 3-3 of Fig. 1.

Fig. is a view showing the tool in oper-, ation with the rim and tire 1n cross. section,

the toolbeing viewed from the cutting edge.

7 The improved implement is preferably made of high grade steel to insure strength and durabiht. It comprises a straight shank or lever including ahandle. portion 10 and a blade portion 11. ,The handle portion may be grooved, as, indicated at 16, to reduce the weight of the tool and to make the same more easily'handled. The outer end of the handle portion is bent, as at 12, such bent portion being fiattenedon both faces. As Fig. 1 indicates, the handle tapers in both width and thickness from the cenlter of the tool toward this outer and bent one.

The blade portion 11 includes two faces, a rounded face 13 and a hollow ground face 14,-; thus the cross section of the blade portion is convex on one face and concave on the other. A cutting or knife edge 15 is provided where the two faces meet, such enticing edge being on one side only of the too That side of the tool opposite to the cut-.

cludes a face 18 transverse to the body of 19 running longitudn the tool and a face nally with the tool. The face 18 is provided so that a hammer may drive the tool inberusted tire. The endof the tool opposite to the end 12 designated by the numeral 20 other portion "in. the drawing has less thickness than any of the tool except the knife The thickness of the blade portion from the end QOtoward that por- This edge. increases increase in thickness is seen in Fig. 4:; thus when the tool is driven underneath a casing fa wedglng i the knife edge and the hollow ground face,

action is exerted, .and due to this wedgingaction also takes placewhen the tool is runaround the. "the rim.

3'5" of breakage.

periphery of It has been "signed like the present one but without the and knife edge is usetire -rusted'fast to a rim.; Thefg rindlng of the blade portion is such that it fits nicely upon hollow ground face less to remove a rim andlifts the rusted for a hammer to strike,

at the thickest part The bent end 12 is designed to be inserted between the tire and the lock ring (not shown) of the rim 6 to effect removal of the ring, thus preparing a way for M the introduction of the knife end between the tire and the rim. It will be clear that, f allparts of the implement are the unitary operation of removing tires from employed in rims, the primary purpose for which this tool was designed.

as atire remov ng tool, it is almost equally useful 1n putting tires on rims and may be being located between i and the handle portion and at the edge oppofound that an implement de est thicknesswhere the blow-receiving porthe periphery of the v I casing off the rim without damaging it in the slightest. The

',,projection 17 provides a convenient place and being located of the tool, will bear heavy blows, if necessary, without danger ground face on the opposite side, and a knife.

edge provided along one side of the tool where the two faces. meet, the end of the :nife portion being formed with a knife edge which formsa continuation of the other knife edge,

t 2. A tire removing tool comprising a shank.

includinga knife portionhaving a knife ,edge along"- oneside and at the end of the tool, a handle port] on, and a portion designed to receive blows, the latter named portion the knife portion site the knife edge, the tool having its greattion is provided and tapering in thickness to eaclrof itsends, that end wherethe knife portion is provided forming a continuation.

blows, said knife portion having a rounded or convexface and a hollow ground or concave face and a knifev edge provided along one side of the tool where the two faces meet. and the end of theknife portion being portion adapted to receive made thin, the blow-receiving portionhaviug-two faces adapted to be struck, one of said faces runnlng transversely of the tool,

the other extending longitudinally of the ,tool on that edge of the tool opposite from .the knife edge, the longitudinal face being the longer. While the present tool has been described my own,

.OLOE AUGUST NORLUND. 

